On one of the Berlin raids it was a clear day and we watched the bombers drop their load and could see the bombs fall and the big explosions go up right down the middle of a wide main street in Berlin. After the bombs were dropped we would fly with the B-17s until they reached the Channel. I went on several Berlin raids and on other occasions we would be diverted to closer targets as the weather had turned bad before we got to Berlin. The P-51 could stay in the air about six hours which was the amount of time it took to go to Berlin and back. Our missions took anywhere from one to six hours. After being tightly strapped in and unable to move around in that small cockpit for six hours, it was difficult to even stand up when getting out of the plane. Some guys would step out of the cockpit onto the wing and fall off onto the ground. We used to tease one fellow because he opened his parachute when he fell off the wing. Being so tired (and the strain of combat really was exhausting) the shot of whiskey we got at the debriefing after a mission was welcome. On each mission we had one pilot who flew up and down the coast of England at 30,000 feet. This was the "relay plane" used to relay any massages to the planes over Germany. Due to the curvature of the earth and communication equipment at that time, radio messages could not be sent directly. If the wind direction changed while the planes were over Germany it would affect the compass heading we were given to return to England and if it was overcast we could have blown off course, missed England entirely and gone out to sea. If your home field was fogged in you were directed to another field. I flew the relay plane just once and it was very monotonous sitting up there for hours. You could throttle the engine down so it would Just keep you from stalling out and save gas that way. One pilot stayed up seven hours and we thought he'd gone down as six hours was the limit. He had just seen how long he could possibly stay aloft by using the technique and came happily back to base long after the mission was over.